Wells et al., J Immunol 2003
(Calcium Signaling...) :
We demonstrate that primary CD4 ( + ) T cells anergized by costimulatory blockade exhibit impaired TCR coupled phospholipase C (PLC)gamma-1 activation
Kanner et al., Immunology 1992
:
Here we show that cross linking of CD4 molecules with CD3 augments the tyrosine phosphorylation of PLC gamma 1, while co-ligation of CD3 with CD45 ( a receptor tyrosine phosphatase ) results in reduced PLC gamma 1 tyrosine phosphorylation